A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 2925-00-221-8529
NSN 5905-01-608-5210
NSN 5895-00-309-3507
NSN 2925-01-656-8217
NSN 5935-01-164-6770
NSN 5998-00-823-8488
NSN 5999-00-003-4752
NSN 7035-00-797-2635
NSN 6135-00-708-0892
NSN 6685-01-104-3708
NSN 6240-00-705-7731
NSN 5996-01-310-8683